/*
 * The MIT License
 *
 * Copyright 2014 David Rodenas Pico.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package edu.uoc.sd.fr14.exp;

import java.util.Random;
import java.util.Set;

import edu.uoc.sd.fr14.Configuration;
import edu.uoc.sd.fr14.ExperimentConfiguration;
import edu.uoc.sd.fr14.comp.ServerComponent;

/**
 * Experiment with disconnection emulation.
 * 
 * @author drodenas
 */
public abstract class ExperimentPhaseD extends ExperimentPhaseX {

	private final Random random = new Random();
	
	private boolean connected = true;
	private final double disconnectProbability;
	private final double reconnectProbability;
	
    @SuppressWarnings("rawtypes")
	public ExperimentPhaseD(Set mes, Configuration configuration, ResultCollector resultCollector) {
        super(mes, configuration, resultCollector);
        
        ExperimentConfiguration config = configuration.experiment();
        disconnectProbability = config.getDisconnectProbability();
        reconnectProbability = config.getReconnectProbability();
    }

    @Override
    public void tick() {
    	super.tick();
    	if (!isStateRun()) return;
    	
    	double rnd = random.nextDouble(); 
    	if (connected) {
    		if (rnd < disconnectProbability) {
    			disconnect();
    		}
    	} else {
    		if (rnd < reconnectProbability) {
    			reconnect();
    		}
    	}
    }
    
    @Override
    protected void cleanUp1() {
		super.cleanUp1();
		// save state
		saveBoolean("connected", connected);
		forceSynchronize();
	}
    
    @Override
    protected void cleanUpN() {
    	super.cleanUpN();
    	forceSynchronize();
    }
    
    private void forceSynchronize() {
    	ServerComponent server = getMyServer();
    	if (server == null) return;
    	
    	server.forceSynchronize();
    }
    
    private void disconnect() {
    	ServerComponent server = getMyServer();
    	if (server == null) return;
    	
    	debug("disconnected");
    	server.disconnect();
    	connected = false;
    }
    
    private void reconnect() {
    	ServerComponent server = getMyServer();
    	if (server == null) return;
    	
    	debug("reconnected");
    	server.connect();
    	connected = true;
    }
    

}
